Pontoon boat



FIG. 1 is a front perspective view of a pontoon boat showing my new design.

FIG. 2 is a starboard side elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a port side elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a bottom plan view thereof. 

The ornamental design for a pontoon boat, as shown. 